Guilty

Does anyone else feel an upsetting amount of pain when you are trying to conceive and then someone who isn't even trying gets it first time. Either a drunken night or just started trying?
I can't help but feel a little bit hurt. I've watched a few of my friends announce pregnancies and engagements and I'm just sat here waiting. Been of any form of birth control since December 2015 and still nothing. We do things by the book ie we don't smoke, I don't drink I haven't for a long time, sex regularly, and so on but it's just not happening and I don't understand why :(.
Is anyone else guilty of this I don't feel like I'm being a brat as words put it just hurt :/